Do Boring People Know They're Boring?

Do boring people know they make you want to fall asleep?  I have someone talking to me right now and I couldn't care less about what they're talking about.  Like I took a phone call in the middle of their conversation and they picked right back up where they left off when I got off the phone.  Now this is the same person who cannot be bothered to listen to anything you're saying, but when they're talking its all "are you listening to me?"  Hell no!!! I do not know what you're talking about, I don't know the people you're talking about, and I generally don't care what you're talking about.  Stop boring me half to death. Shut the hell up.